qt-creator/plugins/qmlprofiler/flamegraphmodel.h

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#ifndef QMLPROFILEREVENTSMODEL_H
#define QMLPROFILEREVENTSMODEL_H

#include <qmlprofiler/qmlprofilerdatamodel.h>
#include <qmlprofiler/qmlprofilernotesmodel.h>
#include <qmldebug/qmlprofilereventtypes.h>
#include <qmldebug/qmlprofilereventlocation.h>

#include <QSet>
#include <QVector>
#include <QAbstractItemModel>

namespace QmlProfilerExtension {
namespace Internal {

struct FlameGraphData {
    FlameGraphData(FlameGraphData *parent = 0, int typeIndex = -1, qint64 duration = 0);
    ~FlameGraphData();

    qint64 duration;
    qint64 calls;
    int typeIndex;

    FlameGraphData *parent;
    QVector<FlameGraphData *> children;
};

class FlameGraphModel : public QAbstractItemModel
{
    Q_OBJECT
    Q_ENUMS(Role)
public:
    enum Role {
        TypeId = Qt::UserRole + 1, // Sort by data, not by displayed string
        Type,
        Duration,
        CallCount,
        Details,
        Filename,
        Line,
        Column,
        Note,
        TimePerCall,
        TimeInPercent,
        RangeType,
        MaxRole
    };

    FlameGraphModel(QmlProfiler::QmlProfilerModelManager *modelManager, QObject *parent = 0);

    void setEventTypeAccepted(QmlDebug::RangeType type, bool accepted);
    bool eventTypeAccepted(QmlDebug::RangeType) const;

    QModelIndex index(int row, int column, const QModelIndex &parent) const override;
    QModelIndex parent(const QModelIndex &child) const override;
    int rowCount(const QModelIndex &parent) const override;
    int columnCount(const QModelIndex &parent) const override;
    QVariant data(const QModelIndex &index, int role) const override;
    QHash<int, QByteArray> roleNames() const override;

public slots:
    void loadData(qint64 rangeStart = -1, qint64 rangeEnd = -1);
    void loadNotes(int typeId, bool emitSignal);

private:
    friend class FlameGraphRelativesModel;
    friend class FlameGraphParentsModel;
    friend class FlameGraphChildrenModel;

    QVariant lookup(const FlameGraphData &data, int role) const;
    void clear();
    FlameGraphData *pushChild(FlameGraphData *parent,
                              const QmlProfiler::QmlProfilerDataModel::QmlEventData *data);

    int m_selectedTypeIndex;
    FlameGraphData m_stackBottom;

    int m_modelId;
    QmlProfiler::QmlProfilerModelManager *m_modelManager;

    QList<QmlDebug::RangeType> m_acceptedTypes;
    QSet<int> m_typeIdsWithNotes;
};

} // namespace Internal
} // namespace QmlprofilerExtension

#endif // QMLPROFILEREVENTSMODEL_H